code: def tearDown(self) -> None:
      self.root.cleanup()
  
file_path: mmocr/tests/test_datasets/test_preparers/test_parsers/test_naf_parser.py
imports: import json
  import os.path
  import tempfile
  import unittest
  from mmocr.datasets.preparers import NAFAnnParser
label_desc: Use image node_id 4 for calling the TestNAFAnnParser obj's underlying member method code with example usage: obj.tearDown() without return types